Rock legend Ted Nugent is firing back at reports the U.S. Secret Service is targeting him for a harshly critical speech of the Obama administration he delivered at the National Rifle Association over the weekend.

The longtime advocate for gun rights compared President Obama and the Democrats to an unwanted animal visiting someone’s home.

Nugent’s words got even more descriptive at times, calling Obama a criminal and saying his administration is “wiping its a– with the Constitution.”

He also flayed four Supreme Court justices for what he says is their stance against Americans’ “right to keep and bear arms.”

He ended with a call to politically decapitate Democrats in November: “We need to ride into that battlefield and chop their heads off in November. Any questions?”

The Secret Service told ABC News it is aware of Nugent’s comments and conducting “the appropriate follow-up.”

“I spoke at the NRA and I will stand by my speech. It was 100 percent positive,” Nugent told the Dana Loesch radio show today. “It’s about we the people taking back our American dream from the corrupt monsters in the federal government under this administration and the communist czars he’s appointed.”

“See, I’m a black Jew at a Nazi-Klan rally, and there are some power-abusing corrupt monsters in our federal government that despise me because I have the audacity to speak the truth to identify the violations of our government, particularly Eric Holder and the president and Tim Geithner, ad nauseam,” Nugent told Loesch.

“I have never in my life threatened anyone’s life. I’m incapable of threatening anyone’s life. Because I’m about positive change, my entire speech, all my articles,” he later added.

Nugent also had choice words for Democratic National Committee chairwoman Rep. Debbie Wasserman Schultz as well as House Minority Leader Nancy Pelosi, both of whom he referred to as “varmints.”

“Varmints are sometimes clever, but they are really easy to outmaneuver,” he said. “If you just listen to Wasserman Schultz, just watch the lady talk, listen to her words, examine her voting record. Listen to Nancy Pelosi, this sub-human scoundrel … these government monsters are so out of control. I’m using my First Amendment.

“The job of we the people is to spotlight cockroaches, and come November we’re going to stomp them at the voting booth,” he said.

The NRA posted video of an interview with Nugent from over the weekend:

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